Another creative theory: Viking-style longships with keels plowed through tuff while it sat on a seabed or lake floor. A volcanic uplift event could have stranded multiple vessels unaware. The level water surface explains constant rut depth, and slender keels could turn without widening tracks. Partial issue: some ruts climb over higher prominences. ⚓
Theory proposed: ancient ships ran aground on soft underwater volcanic tuff
Site mentioned
📍 Cwm Era Slate Quarry, Dulas Valley;Fronfelin; Fronfelin Slate Quarry🌍 Show on the globe
Key facts
- Listener theory proposes Viking-style ships ran aground on freshly formed volcanic tuff on a seabed or lake floor
- Slender long ships with single or double keel ribs could plow through soft tuff before it hardened
- Sudden volcanic uplift of the seabed could have caught boat pilots unaware, grounding multiple vessels
- Theory explains constant rut depth by referencing a level water surface
- Sharp fin-shaped keels could turn without widening the track between them
- Volcanic eruption followed by massive rainfall could have displaced water and reshaped the landscape
- Theory partially contradicted by ruts climbing over higher prominences rather than staying at constant water depth
Sources
Viking Tor - Viking River Cruisesvikingrivercruises.com
Our award-winning Viking Longships® showcase innovative engineering, streamlined design and understated elegance for the most comfortable European river cruise ...
Viking Longships | NEPTUN WERFTmeyerwerft.de
Every single Longship constructed by NEPTUN WERFT is 135 metres long, almost 11.5 metres wide and 3 decks high. Up to 190 passengers can be accommodated in 95 ...
Viking River Cruise Ships: Everything You Need to Knowcruisecritic.com
Everything you need to know about a Viking River Cruises' ship, known as Longships, including ship layout, itineraries, cabins and dining.
Valkyrie Viking Ship | 56 foot hand-crafted wooden vesselnorthwestvikingship.com
A unique and historic replica, Valkyrie is based on the ancient recovered ship 'Skuldelev 6′, a Norwegian-built Viking ship unearthed after one thousand years ...
A Heavy First Day: Learning to Load the Ballast of a Viking Longshiparchaeofox.wordpress.com
A few old men stood around a large steel box, bolted shut and dripping water at each of its corners. “They are steaming a plank” Terje said as ...
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